Demountable wheel.



A. L. PUTNAM. v

DEMOUNTABLE WHEEL. APPLICATION men AUG|26119F61 1 253 420 I Patented Jain. 15, 1918 gwuento c f (212ml: PM

a; WW/Wwwm UNITED STATES PATENT OFFICE.

ALDEN L. PUTNAM, OF DETROIT, MICHIGAN, ASSIGNOR '10 IOETBOI'I. PBEBBED STEIL COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

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Specification of Letters Patent.

Patented Jan. 15, 1918.

Application filed August 26, 1918. Serial lo. 118,987.

To all whom it may concern:

Be it known that I, ALDEN L. PUTNAM, a citizen of the United States of America, residin at Detroit, in the county of Wayne and gtate'of Michigan, have invented certain new and useful Im rovements 1n 1 )emountable Wheels, of w ich the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to demountable wheels of that type in which the wheel body is detachably secured to the hub to permit of quick replacement. More particularly the invention relates to a construction in which the body of the wheel is formed ofa metal disk having a rim at its periphery for engaging the tire either directly or through the medlum of a demountable rim.

Heretofore wheels of this character have been formed attached to the wheel hub by clamping flanges arranged upon opposite sides of the body disk. The driving torque is transmitted through the medium of a series ofpins projecting from one of the hub flanges and engaging registering apertures in the body disk. Ithas, however, been found inconvenient to replace a wheel of this construction, for the reason that it is difiicult to hold the disk in engagement with the short pins while the clamping flange 1s being engaged with the hub and tightened.

To overcome this difliculty I have devised an improved construction, in which the pins transmitting the torque are made consider; ably longer than the thickness of the apertured disk with which. they areengaged, and to provide for this increased length the clamping flange is recessed .to, rece1ve the projecting ends. Furthermore, this recess is utilized for the location of a latching or retaining device for preventing the acclgental disengagement of the clamping ange.

In the drawings:

Figure 1 is a section showing the hub and the portion of a wheel to which my improvements are applied;

Fig. 2 is a similar view with the-parts in clamped position;

A is the hub to which the demountable wheel is attached, said hub being provided with a body portion Band a flange portion 0 D is the clamping member, which has a flange E for coiiperatin with the flange O, and a hub cap portion 1 threaded at G to engage a correspondingly threaded portion on the portion B. H is the disk body, which is clam ed between the flanges C and E, and I are t e driving ins which are secured to and project latera ly from the flan E and gggaige registering apertures in t e memr As has been stated, where the pins I are restricted in length to the thickness of the disk, it is diflicult to engage the latter therewith and hold it in place during the clamping operation. I have therefore formed the pins of considerably reater length than the thickness of the dis and have tapered their outer ends as indicated at J so that they may be readily engaged with the apertures in the disk H. The flan e E, I have also formed with a recess K or receiving the projecting end of each pin, said recess being preferably of annular form. Thus in mounting the wheel, after the disk H is slipped on the hub and engaged with the pins I the member D may be placed in position and secured by screwing the threaded portion G upon the correspondingly-threaded hub B. uring this operation the wheel is held from tipping over, as the pins I are of suflicient length to prevent such a result. On the other hand, thesepins do not in any way interfere with the clam ing-of the disk, as the recess -K provides c earanoe for the projecting ends. When the wheel is in use, there isa tendlency for the vibration of the parts to cause the loosening and unscrewing of the clamping flange. To prevent this. I have arranged retainers in the recess K, preferably curved springsL, which as the flange is tightened will yieldably press against and ride over the pins I. These retainers will not interfere with either the engagement or so I disengagement of the flange when suflicient force is applied thereto, but will prevent the U Fig. '3 is an elevation of the clamping accidental disengagement due to jar or vimeans for flange detached, showing the retaining do vices therefor; and

Fig. 4 is a sectional detail view of spring reventing acgdental imscrewing oftwo c vmping mem bration. What I claim as my invention is:

1. In a .demountable wheel, the combine tion with a disk body, of a hub having a flange forming a seat for one side of said disk, aseries of pins, projecting from said flange for engaging registering apertures in said disk, the len th of said 1115 being greater than the t ickne of t e d1sk, a clamping disk for engaging the opposite side of said disk having a threaded engagement with said hub and an annular recess therein for receiving the projecting ends of said pin, and retainmg means for preventing t e accidental unscrewing of the flange located in said annular recess and in with said pins. 7

In a demountable wheel, the combination with a disk body, of a hub having a flange forming a seat for one side of said disk, 9. series of pins projecting from said flange and engageable with registering apsaid disk, said pins bein of cooperatertures 1n greater length than the thickness 0 the disk, a clamping flange for the opposite side --of said disk having a threaded engagement with said hub and provided with an annu- 8. In a demoun-table wheel, the combina- 7 tion with a disk body, of a hub having a flange forming a seat for one side of said disk, a clamping flan e for engaging the opposite side of said (fisk, a pin projecting laterally from one of said flanges engaging a registering aperture in said disk, said pin being of eater length than. the thickness of the dis and-the projecting portion engaging a recess in t e cooperating flange, and retalning means for vpreventing the accidental unscrewing of the flange located in said annular recess and cooperating .with

said pin.

In testimony whereof I afiix m n ALDEN L. Pi iT ature. 

